Hvernig á að hægum hraða renna í html

hvernig á að hægum hraða renna í html

Marquee speed can be changed using the "scrollmount" attribute. 
For example, if you are using scrollmount = "1"
then it sets the marque to scroll very slowly, 
and as you increase the "scrollmount," 
the scrolling speed will also increase.